gmxhr-fetch

A fetch-like polyfill for userscript managers.(TM,GM,VM)

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greasyfork.org/scripts/372917/639024/gmxhr-fetch.js

Du musst eine Erweiterung wie Tampermonkey, Greasemonkey oder Violentmonkey installieren, um dieses Skript zu installieren.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

Sie müssten eine Skript Manager Erweiterung installieren damit sie dieses Skript installieren können

(Ich habe schon ein Skript Manager, Lass mich es installieren!)

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You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

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;((global, fn) => {
	global.gmfetch = fn(typeof GM === 'undefined' ? {} : GM)
})(this, GM => {
	if (typeof GM_xmlhttpRequest === 'undefined' && typeof GM.xmlHttpRequest === 'undefined') {
		throw new Error('Either GM_xmlhttpRequest or GM.xmlHttpRequest must exists!')
	}
	if (typeof GM_xmlhttpRequest === 'function' && !GM.xmlHttpRequest) {
		GM.xmlHttpRequest = GM_xmlhttpRequest
	}
	const fromEntries = e => e.reduce((acc, [k, v]) => ((acc[k] = v), acc), {})
	const parseHeader = h =>
		fromEntries(
			h
				.split('\n')
				.filter(Boolean)
				.map(l => l.split(':').map(tok => tok.trim()))
		)
	const fetch = (input, init = {}) => {
		if (input instanceof Request) {
			return fetch(input.url, Object.assign({}, input, init))
		}
		return new Promise(res => {
			if (init.headers instanceof Headers) {
				init.headers = fromEntries(Array.from(init.headers.entries()))
			}
			init.data = init.body
			init = Object.assign(
				{
					method: 'GET',
					headers: {}
				},
				init,
				{
					url: input,
					responseType: 'blob'
				}
			)
			GM.xmlHttpRequest(
				Object.assign({}, init, {
					onload: xhr => {
						xhr.headers = parseHeader(xhr.responseHeaders)
						res(new Response(xhr.response, Object.assign({}, init, xhr)))
					},
					onerror: xhr => {
						console.log('err', xhr)
						res(new Response(xhr.response, Object.assign({}, init, xhr)))
					}
				})
			)
		})
	}

	return fetch
})